System and method of magnetic shielding for sensors
US10094720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes a magnetostrictive sensor. The magnetostrictive sensor includes a driving coil configured to receive a first driving current and to emit a first magnetic flux portion through a target and a second magnetic flux portion. The magnetostrictive sensor also includes a first sensing coil configured to receive the first magnetic flux portion and to transmit a signal based at least in part on the received first magnetic flux portion. The received first magnetic flux portion is based at least in part on a force on the target. The magnetostrictive sensor includes a magnetic shield disposed between the driving coil and the first sensing coil. The magnetic shield is configured to reduce the second magnetic flux portion received by the first sensing coil. The magnetic shield includes a composite with a conductive material and an insulating material, a metamaterial, or a mesh structure, or any combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.